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TODO:
Current
x fs_mkdir appears to be grabbing blocks that are in use - need to
figure out why - had to fix fs_blkalloc_internal in fs_bits.c to
use the incore bitmaps instead of ondisk.
o Make sure that all blocks in an inode get marked cleared when an
inode is cleared.
x If a directory is unlinked from pass2 on, make sure that any
directories that have it as a parent have their
dir_info->treewalk_parent entries cleared - handled by pass3
checking if parents inodes are valid in the bitmap
o If an directory is unlinked from pass2 on, make sure that inodes
have their link count decremented (this may be difficult - i'll
have to reread the dirents and decrement the counts for all dirents
up to the error...).
x 'Add in UI for interactive mode
o Check hash of directory name against name given (Would be nice -
not in old fsck, but can cause problems if it is not verified.)
x Unstuffed EA blocks have type GFS_METATYPE_ED in 6.1, but
GFS_METATYPE_EA in 6.0 - handle this.
---
Future
o internationalization
o Check GFS special files (quota, resource group index inode, journal
index inode, license inode?)
o convert dir_info list to a hash table like the inode_info hash
o Fix up the bitmap enums and #defines in block_list.[ch]
o Go through all fxns that have NEEDS_CHECKING in them and verify
them (and remove NEEDS_CHECKING)
o Add 'preen' option?
o Add disk-based bitmaps option in case system doesn't have enough
memory to handle all the bitmaps
o currently rgrp bitmaps are loaded into memory on initialization -
need to see if this is necessary or not - we're using them in pass1
and again in pass5 - if memory is tight we might be able to free
them in between
o Offer exhaustive search capability if superblock or rgs are missing
or broken that checks block by block for fs info.
o If we encounter a directory entry in pass2 that points to a block
marked free, shove it into a queue, and then at the end of pass2,
clear all results, then rerun from pass1 including the blocks in
the queue as well as those marked in the RG bitmaps. With this, we
can rebuild the entire fs with a valid root inode, it'll just take
several iterations.

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